Electric regulation.



. Patented June 22, 1915.

INVENTOR WITNESSES.

' ioness.

Beer AVRILABLE COPY Jenn L. omivnnme; or new YORK, N. Y., essronon TO earns; can. assume mon'rme oonranr, A conronnrron or new master.

ELECTRIC REGULATION.

Application filed January 5, 1910. Serial No. 538,508. I

To all whom it may concern:

Be it known that I, J can L. Cnnvnmuo, a

I resident of New York, in the county and State of New York, have invented certain new and useful Improvements in Electric Regulation, as set forth in the annexed specification and drawing forming a part 1 to systems of electric regulation in which it is desired to maintain a constant voltage upon lamps or other translation devices operated from a source of current subject to variations in voltage, it will be described with reference to such a system.

Figure 1 is a diagrammatic view of a system comprehending my invention wherein the same operates to hold the voltage con- I stant. Fig. 11 is a diagrammatic representa- I clicated tion of a portion of a system wherein my invention may be employed to hold the current in a circuit constant. 1

Referring to Fig. I, 1 represents a dynamo or generator provided with the usual field coil 2. 3 represents .the positive lead of the generator which may be carried to one side of any suitable type of automatic switch inat 1 adapted to close the generator circuit when its voltage shall reach a predetermined oint and open the same when its voltage s -all have fallen to a predetermined point as may be desired. The other side of the switch is connected to the main 5 in communication with one side of the storage battery 6 and one side of the lamps or translating devices indicated at 7. The

- other side of thetranslating devices is connected with the main 8 which is carried to the regulator 9 whichreturn to the generator ismade through lead 10 which is in communication with the negative side of the storage battery 6. 11 represents the base of the regulator 2' upon which are mounted metallic-conducting plates 12 which are fastened thereon by means of studs and nuts 13. 14 represents a magnet, in this instance shown as of the iron clad, type, attached to the base .11 as by means oi screw 15 and provided with a winding 16 and armature 17 free to move upon the rod 18 carried by the magnet 1A and made of non-magnetic material. 19 represents a spring tending to press the armature 17 away from the magnet 14: and the limit of'travel of the armature upon the rod 18 maybe determined as by nuts 20. 21 represents a winding which may be carried upon the armature 17 or otherw1se placed in operative relation to the magnet 14: for a purpose which will hereinafter be explained. The armature l'l is provided with arms 22 carrying screws 23, the position of which may be looked as by jam members 25 which are attached to conductmg plates 26. Between the conducting plates 12 and the conducting members 26 are placed regulating units in this instance indicated as d1sks or contacting electrodes as,

nuts 24. The screws 23 carry insulating for example, carbon plates or disks in such manner that the pressure upon the disks or other regulating means 27 will vary as the pull of the magnet 14: upon its'armature' 17 varies. In the drawing 1 have shown two piles of contacting electrodes or regulating elements but it will be obvious that any number may be employed. In practice I find it usually advantageous to use three such piles, then pressure applied at a central point is easily distributed to the three members. shown as electrlcally connected as by means of the wire 28 and it will be obvious that if the members 26 be connected into an electric circuit that the conditions of the same will be modified upon changes in 'ressure eX-.

erted upon the members 27 as, or example, when the magneto-motive force of the magnet 14 be changed. The winding 16 has one of its ends connected with the main 8 by means of the wire 29 and the other end connected with the main 5 as by means of the wire 30 through the resistance 81, the function of which will hereinafter appear. 32 represents a resistance varying element in this instance shown as apile of contacting elec trodes, for example, carbon disks, the resistance of which will vary under variations in pressure. The resistance element 32 is placed between the adjustable screw 33 and the lever 34 pivoted-at 35 and normally pulled in an upward direction as by ad In Fig. I the members 13 are with the main 8 as by wires 42 and 29. 4O

represents a dash-pot which may be used if desired to prevent too sudden motion of the core 38. The spring 36, by tending to lift.

the lever 34, tends to increase the resistance of the member or element 32 while current in the solenoid 39 tends to draw the core- 38 downwardly in such manner as to decrease the resistance of the element 32. The resistance varying element 32 is connected with the wire 30 as by means of wire/l3 and with one end of the winding 21 as by means of wire 44. The opposite end of the coil 21 is connected with the wire 29 as by means of wire 45, thus it will be obvious that the element 32 is connected in series with the coil 21 and these both connected in shunt across the coil 16. Therefore, as the resistance of the member 32 decreases less current will fl'ow through the winding 16 as more will be shunted away from the same and this current so shunted away from the winding 16 will flow through the winding 21 so as to increase the magneto-motive force thereof. The resistance 31 will limit the total amount of current which will flow through the windings as the resistance 32 is lowered. The windings 16 and 21 are so arranged that their magneto-motive forces oppose each other for a purpose which will hereinafter be more plainly brought out.

The operation of my improvement in electric regulation is substantially as follows: Referring-to Fig. I, if the generator be at rest or running at very low speed the switch 4 will be open and the storage battery 6 will supply current to the lamps or translating devices 7 which current may be considered as flowing from the battery to the main 5 and returning through the main 8, regulator 9 and main 10 to the battery. The current flowing through the regulator 9 may be considered as entering the-lower conducting member 26 and then passing through the resistance varying ele ment 27 to the conducting plate 12, then through stud 13 and wire 28 to the upper stud l3,vthen through upper plate 12 and.

resistance varying element 27 to the upperconducting member 26. It \Vlll be OlJVIOUS that the resistance of the members 27 will deteri'nine the voltage impressed upon the translation devices 7 and if this resistance be properly varied the voltage impressed upon the translating devices 7 may be held constant throughout reasonable changes in voltage of the storage battery 6. It will also be obvious that the resistance of the members 27 by exerting pressure thereupon.

Some current will also flow from the main 5 through the wire 41. solenoid 39 and wire 42 to the lead 8 and thus the current in the coil 39 will be subject to changes in voltage impressed upon the translation circuit. I so adjust the spring 36 that when the desiredvoltage is reached upon the translation devices 7, for example, the normal discharge voltage of the battery 6, the coil 39 will cause the core 38 to be lowered and pressure to be exerted upon the resistance element 32 so as to lower the resistance thereof and causesome current to flow from the wire 30 through wire 4:3, resistance 32, wire 44, coil 21 and wire 45 to wire 29. This circuit being in shunt to the winding 16 and both of these being in series with the resistance 31, decrease in resistance 32 will weaken the currentrin the coil 16 and therefore lessen the attractive eiiort of the magnet 14 which in turn will lessen the pressure uponthe disks 27 and tend to increase the resistance in circuit with the translation devices and prevent arise in voltage thereupon. To increase this effect I wind the coil 21 in'such manner that the current shunted from the coil 16 in traversing the coil 21 will set up a magneto-motive force opposed to that of the coil 16. '1herefore the current shunted away from the coil 16 will not only weaken the same in that manner but will act to strengthen the coil 21 and thus oppose or further weaken the effect of the coil '16. If the generator be brought up to speed and the switch 4 closed current will llow therefrom to-the lamps or translating devices and as this will decrease the current taken from the storage battery the voltage across the line will rise and the voltage across the translation devices will also tend to rise. This will cause an increase in the current in the coil 39 which will draw down the core 38 so as to further decrease the resistance 32 and weaken the coil 16 and 13' Llfi crease of current from the generator. If which is icy now the generator slow down the voltage thereon, electromagnetic me.-. i'or e ,ng across the mains will decrease and the voltpressure thereon, ele romagnetic means age across the translation devices will tend tendingto decrease sai pressure, and autoto decrease therewith. A very slight drop, rnatic means for governing said electromaghowever, in voltage across the translation netic means. 70

devices will cause the coil 39 to weaken e. A regulating system comprising a genand the resistance 82 to be increased and crater-and a work circuit, a regulating dethe coil. 16 strengthened and the coil 21' vice for said work circuit comprising an eleweakened so as to increase the pressure upon ment the effect of which is varied by vsria- I the disks 27 and decrease the resistance tions in pressure thereupon, electromagnetic thereof to compensate for the tendency means for exerting said pressure, electrotoward fall in voltage cross the translamagnetic means coiiperating with the first tion devices. By proper arrangement of means tending to-modify said pressure,'and the parts set forth in Fig. I the voltage automatic means responsive to variations in across the translation devices may be held the conditions of said circuit adapted to substantially constant within an extremely vary the combined operation of the said elecnarrow margin. In practice I find it adtromagnetic means. 1, vantageous to make the air gap between the 5. A regulating system comprising a gen magnet 14 and the armature 17 very small orator and a work circuit, a r gulating dewhen the disks 27 are compressed to the vice for said work circuit, the elrect of which maximum so that a very strong pull is.ex is altered by variations in pressure thereerted upon the armature 17 and the disks upon, electromagnetic means for exerting placed under considerable pressure withsaid pressure, electromagnetic means for deout'consumption of any large current in the creasing-saidpressure, and automatic means coil 16. If it be desired to hold the curaffected by changes in said circuit governing rent in the-line constant for any particular both the said electromagnetic means.

reason as, for instance, when operating are 6. A regulating system comprising a gem. lamps, the same type of device as shown in erator and a: work circuit, a regulating de- Fig. I may be used with exception that the rice for the work circuitcomprising an eleseries coil 46 in Fig. H is placed around inent the eifect of which is altered by variai the core of the solenoid 38 instead of the 'tions in pressure thereupon, means for exertshunt or volt meter coil 36, the action of ing said pressure, comprehendinga plurality which is. a function of current in the line of windings, and automatic means for deterrather than voltage across the same. As the mining the current in said windings. other parts/of the system will be identical 7. A regulating system comprising a genwith Fig..l?tl1ey are omitted in Fig. 11 for erator and a work circuit, a regulating dethe sake of simplicity. vice in said circuit, electromagnetic means I do not wish in any way to limit myself for said device comprising a plurality of to theeXact construction or details of opera- Windings;;and means for governing said election set forth in the above description which tromagnetic means comprising a variable reis merely a description of one form of syssist-ance shunt around one of said windings tem embodying the elements of my invention for varying the current in said windings. which is as set forth in the following claims: ,8. A regulating system comprising a gen- 1. A regulating. system comprisingagenererator and a work circuit, a regulator for ator and a work circuit, a regulating device said circuit, electromagnetic means for operfor said work circuit, the action of which is .ating said regulator comprising a pluralityv varied. by pressure exerted thereon, elcctro-- of windings, and means for governing said magnetic means for exerting pressure therewindings comprising a variable shunt .on. electromagnetic means for decreasing around one of said windings and in series said pressure. and automatic means for govwith another of said windings for simulerning the joint operation of said means. taneously varying the current in all of said 2. A regulating system comprising a genwindings. orator and a work circuit, a regulating de- 9. A regulating system comprising a gen vice for said circuit, the action of which is erator and a work circuit, a regulator for a tered by variations in pressure thereon, said circuit, electromagnetic means tending 1 ehrctromagnetic means for exerting pressure to decrease the current opposing effect of thereon, electromagnetic means modifying said regulator, resilient means tending to ini said pressure, and automatic means for concrease the current opposing effect of said trolling said pressure exerting and said regulator, electromagnetic means co'ciperatmodifying means. ing therewith to increase said effect. and

3. A regulating system comprehending a generator and a work circuit, a regulating device for said work circuit, the action of automatic means governed by the conditions in the circuit for controlling said electromagnetic means.

of said last mentioned means, and automatic means for governing the joint effect of the electromagnetic means.

1].. A regulating system comprising a generator and a Work-circuit, a regulating device for the work circuit compreli'endil'ig an element the ellcct of which is altered by variations in pressure thereupon, means for exerting said pressure comprehending a winding energized by said circuit, means cooperating therewith comprising a winding also energized by said circuit, and automatic means for varying the current in said windings.

12. A regulating system con'iprisinga generator and a work circuit, containing translation devices, a regulator for said devices comprising an element the ellect of which is altered by variations in pressure thereon electri'nnagnetic means normally tending to increase said press-lire,electromagnetic means tending to modil'y the elfect of the said last mentioned n'icans, and automatic means governed by the conditions of said circuit to weaken the first mentioned electromagnetic means and strengthen the other electromagnetic means upon predetermined changes in the conditions of said circuit. 13. A regulating system comprising a generator and a work circuit, a regulator for said circuit including a plurality of contacting members adapted when compressed to increase the voltage of said circuit, elecautomatic means for controlling both electromagnetic means.

14:. In an electric circuit, the combination of regulating means the action of which is varied by pressure exerted thereon; electromagnetic means for exerting said pressure;

,and electromagnetic means for modifying said. pressure in parallel with the first-named electromagnetic means.

15. In an electric circuit, the coi'nbination of regulating means the action of which is varied by pressure exerted thereon; electromagnetic means for exerting said pressure; electromagnetic means for modifying said pressure in parallel with the first electromagnetic means; and automatic means .for

governing the joint operation of said means. 16. A regulating system comprising a genorator and awork circuit, regulating means for the work circuit, the effect of which isvaried by pressure exerted thereupon, electromagnetic means for exerting pressure upon said regulating means, and electromagnetic means for modifying said pressure in parallel with the first. named electromagnetic means, both of said electromagautomatic means for governing the joint operation of said electromagnetic means, said automatic means and both of said elec tromagnetic means being energized by said circuit.

JOHN L. CREVELING Vitnesses E. HALL,

M. Hnnsxovrrz. 

